On Mon, 2017-03-20 at 06:31:48 UTC, Nicholas Piggin wrote: > PA Semi will wake from low power state at the system reset interrupt, > with the event encoded in SRR1, rather than waking at the interrupt > vector that corresponds to that event. > > The system reset handler for this platform decodes SRR1 event reason > and calls the interrupt handler to process it directly from the system > reset handlre. > > A subsequent change will treat the system reset interrupt as a Linux NMI > with its own per-CPU stack, and this will no longer work. Remove the > external and decrementer handlers from the system reset handler. > > - The external exception remains raised and will fire again at the > EE interrupt vector when system reset returns. > > - The decrementer is set to 1 so it will be raised again and fire when > the system reset returns. > > It is possible to branch to an idle handler from the system reset > interrupt (like POWER does), then restore a normal stack and restore > this optimisation. But simplicity wins for now. > > Tested-by: Christian Zigotzky <chzigot...@xenosoft.de> > Signed-off-by: Nicholas Piggin <npig...@gmail.com>
Series applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/461e96a3374892d551fe270a975f33 cheers
